C Channel 90s

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Did some searching and only came up with mild results. What is the consensus on C channel joints? Do you guys use mitered cuts or notching? I have been looking a lot at equipment trailers lately and have seen both. IMO mitered joints look better but they aren't very forgiving in alignment.
Reply:I normally notch joints. That way they are all the same, the ends and beams in between are all the same.
Reply:I would say it depends a lot on a couple of things, the equipment you have available, the load it has to take, and how important the asthetics of the look are. I like to mitre but have good equipment to do it."Si Vis Pacem Para Bellum"Lincoln Idealarc 250 AC/DCMillermatic 251   Syncrowave 300   30A spoolgunLincoln MP210Hypertherm 45(2) LN 25(2) Lincoln Weldanpower 225 CV(4) SA200   1 short hood    SA250    SAM 400
Reply:Notch or coping as it is known as is an easier cut to make and is usually preferred in structural steel fabrication. It can be done easily and quickly with even a cutoff wheel. Sent from my BlackBerry 9650 using TapatalkCERTIFICATIONS:7018M- H.V.O10718M- H.V.O11018M- H.V.O9N10- H.V.O71T-1-HYM- H.O.V100S1 PULSE ARC 0,035- H.O.V100S1 PULSE ARC 0.045- H.O.VER70S-3 PULSE ARC 0.035 H.O.VER70S-3 PULSE ARC 0.045 H.O.VER5554- H.O.V
Reply:Hello minner, I have included a diagram of some channel fit-ups. Number 4 is the easiest as there is no notching, angle cutting or anything else required. Many trailers will be built with this in mind for speed and efficiency of construction. They might also construct the frame with the peripheral pieces leg-out so that all of the cross stringers can have square cut ends. My personal take on strength would be to "notch" the fits if strength is what you are trying to achieve. The mitered corners do look nice but they are a bugger to cut and fit accurately compared to other choices, but that's just my personal take. I am sure that others will have a different opinion and that's perfectly fine with me. Good luck on your future projects. Best regards, Allan Attached Imagesaevald
Reply:Thanks guys. I don't own a plasma but could imagine on larger channel that it'd make quick work. I have always notched angle and mitered Channel (on a saw), but I'll give notching a shot on this next project.
Reply:If you take the time you can make a template that is easy to follow. The cross members and end plates will make tongues that fit the C channel. This works well most the time I have had trouble with some foreign steel using this as the channel changed size +/- 1/4. The fastest way is to face the C out. Less time cutting and fewer inches of weld. Strength wise I can't see much difference here is a trailer to look at.  The first pictures show well but the rest are blurry.http://weldingweb.com/vbb/showthread.php?t=58869Last edited by flatbustedbroke; 04-18-2012 at 08:07 PM."Liberalism is a mental disorder" Dr. Savage